CVE-2026-14676

PostgreSQL pg_stat_statements heap buffer overflow executes arbitrary code

State: Published
Severity: 8.8 High
Published: Aug 13, 2026
Updated: Aug 29, 2026
Reserved: Jul 3, 2026

Description

Heap buffer overflow in PostgreSQL pg_stat_statements allows the query author to execute arbitrary code as the operating system user running the database, via crafted queries containing array constants. Within major version 18, minor versions before PostgreSQL 18.6 are affected. Versions before PostgreSQL 18 are unaffected.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	PostgreSQL

Weaknesses

CWE-122 Heap-based Buffer Overflow

Affected Products

Product	Versions
PostgreSQLn/a	18 to before 18.6Affected

References

https://www.postgresql.org/support/security/CVE-2026-14676/

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